.page-faq {
  --faq-card: #ffffff;
  --faq-hair: #d8e3ea;
  --faq-muted: #5a6e7c;
  --faq-amber-soft: rgba(245, 179, 60, 0.12);
  background: var(--mist);
  color: var(--ink-text);
  padding-bottom: 4.5rem;
}

.page-faq .breadcrumb {
  padding: 1rem 0 0.25rem;
  font-size: 0.85rem;
  color: var(--faq-muted);
}

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  margin: 0.75rem 0 2rem;
  padding: 1.5rem 1.15rem 1.6rem;
  border: 1px solid var(--faq-hair);
  border-radius: 18px;
  background:
    radial-gradient(120% 150% at 100% 0%, rgba(30, 224, 206, 0.16), transparent 62%),
    linear-gradient(158deg, #ffffff 0%, #eaf3f7 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -90px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 1px solid rgba(30, 224, 206, 0.4);
  pointer-events: none;
}

.page-faq .faq-hero__kicker {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan-deep);
}

.page-faq .faq-hero h1 {
  margin: 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 6vw, 2.6rem);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-faq .faq-hero__lede {
  margin: 1rem 0 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.85;
  color: #2c3d4b;
}

.page-faq .faq-hero__toc {
  display: flex;
  gap: 0.5rem;
  margin: 1.35rem 0 0;
  padding: 0 0 0.25rem;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-hero__toc a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.42rem 0.75rem;
  border: 1px solid var(--faq-hair);
  border-radius: 999px;
  background: #fff;
  color: var(--ink-text);
  font-size: 0.85rem;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}

.page-faq .faq-hero__toc a:hover,
.page-faq .faq-hero__toc a:focus-visible {
  border-color: var(--cyan);
  color: var(--ink-900);
}

.page-faq .faq-hero__toc span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--cyan-deep);
}

.page-faq .faq-step {
  position: relative;
  margin-top: 1.1rem;
  padding: 1.35rem 1.1rem 1.5rem;
  border: 1px solid var(--faq-hair);
  border-radius: 16px;
  background: var(--faq-card);
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 1.1rem;
  right: 40%;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: linear-gradient(90deg, var(--cyan), rgba(30, 224, 206, 0));
}

.page-faq .faq-step__grid {
  display: grid;
  gap: 1rem;
}

.page-faq .faq-step__aside {
  position: relative;
  display: flex;
  align-items: flex-start;
}

.page-faq .faq-step__num {
  display: grid;
  place-items: center;
  width: 76px;
  height: 76px;
  border: 1px solid var(--line);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 2rem;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--amber);
  background: rgba(245, 179, 60, 0.06);
}

.page-faq .faq-step__main {
  min-width: 0;
}

.page-faq .faq-step__title {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(1.22rem, 3.6vw, 1.6rem);
  font-weight: 800;
  line-height: 1.4;
  color: var(--ink-900);
}

.page-faq .faq-step__main p {
  margin: 0 0 0.8rem;
  max-width: 66ch;
  font-size: 0.98rem;
  line-height: 1.85;
  color: #22303c;
}

.page-faq .faq-step__main a {
  color: var(--cyan-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-step__main a:hover {
  color: var(--ink-900);
}

.page-faq .faq-figure {
  margin: 1.25rem 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  background: #e9f1f5;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  margin-top: 0.6rem;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--faq-muted);
}

.page-faq .faq-pitfall {
  margin-top: 0.9rem;
  padding: 0.7rem 0.85rem;
  border-left: 3px solid var(--amber);
  border-radius: 0 8px 8px 0;
  background: var(--faq-amber-soft);
  font-size: 0.92rem;
  line-height: 1.75;
  color: #3a3020;
}

.page-faq .faq-pitfall strong {
  display: block;
  margin-bottom: 0.15rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: #9a6a12;
}

.page-faq .faq-step-item {
  margin-top: 0.7rem;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  background: #fbfdfe;
}

.page-faq .faq-step-item summary {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.85rem 0.95rem;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  font-size: 0.97rem;
  line-height: 1.55;
  color: var(--ink-900);
}

.page-faq .faq-step-item summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-step-item summary::after {
  content: "–";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--cyan-deep);
}

.page-faq .faq-step-item:not([open]) summary::after {
  content: "+";
}

.page-faq .faq-step-item__num {
  flex: none;
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--line);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--cyan-deep);
}

.page-faq .faq-step-item__body {
  padding: 0 0.95rem 0.95rem;
  border-top: 1px dashed var(--faq-hair);
}

.page-faq .faq-step-item__body p {
  margin: 0.75rem 0 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: #22303c;
}

.page-faq .faq-step-item__body .faq-pitfall {
  margin-top: 0.7rem;
}

.page-faq .faq-band {
  margin: 1.6rem 0 0;
  padding: 1.1rem 1.15rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
  background: var(--ink-800);
  color: #dfeef3;
}

.page-faq .faq-band__label {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .faq-band p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
}

.page-faq .faq-band a {
  color: var(--amber);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-pair {
  display: grid;
  gap: 0.75rem;
  margin: 1.2rem 0 0;
}

.page-faq .faq-tile {
  display: grid;
  gap: 0.4rem;
  align-content: start;
  padding: 1rem 1rem 1.1rem;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  background: linear-gradient(170deg, #ffffff 0%, #f2f8fa 100%);
}

.page-faq .faq-tile__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-faq .faq-tile h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.5;
  color: var(--ink-900);
}

.page-faq .faq-tile p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: #33434f;
}

.page-faq .faq-arrow {
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 1.35rem;
  color: var(--cyan-deep);
  transform: rotate(90deg);
}

.page-faq .faq-list {
  display: grid;
  gap: 0.55rem;
  margin: 0.9rem 0 0.9rem;
  padding: 0;
  list-style: none;
}

.page-faq .faq-list li {
  position: relative;
  padding-left: 1.35rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: #22303c;
}

.page-faq .faq-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-faq .faq-list strong {
  font-weight: 700;
  color: var(--ink-900);
}

.page-faq .faq-back {
  position: fixed;
  right: 0.85rem;
  bottom: 0.85rem;
  z-index: 30;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.55rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(11, 42, 61, 0.94);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  backdrop-filter: blur(6px);
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}

.page-faq .faq-back:hover,
.page-faq .faq-back:focus-visible {
  border-color: var(--amber);
  color: var(--amber);
}

@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding: 2rem 2rem 2.1rem;
  }

  .page-faq .faq-step {
    padding: 1.7rem 1.6rem 1.8rem;
  }

  .page-faq .faq-step::before {
    left: 1.6rem;
  }

  .page-faq .faq-pair {
    grid-template-columns: 1fr auto 1fr;
    align-items: stretch;
    gap: 1rem;
  }

  .page-faq .faq-arrow {
    transform: none;
  }
}

@media (min-width: 900px) {
  .page-faq .breadcrumb {
    padding-top: 1.25rem;
  }

  .page-faq .faq-step {
    padding: 2rem 2.1rem 2.2rem;
    margin-top: 1.35rem;
  }

  .page-faq .faq-step::before {
    left: 2.1rem;
    right: 55%;
  }

  .page-faq .faq-step__grid {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 2rem;
    align-items: start;
  }

  .page-faq .faq-step__num {
    width: 104px;
    height: 104px;
    font-size: 2.9rem;
  }

  .page-faq .faq-step__aside::before {
    content: "";
    position: absolute;
    left: 50%;
    top: -2rem;
    height: 2rem;
    border-left: 1px dashed var(--line);
  }

  .page-faq .faq-step__title {
    margin-top: 0.35rem;
  }

  .page-faq .faq-step-item summary {
    padding: 0.95rem 1.15rem;
  }

  .page-faq .faq-step-item__body {
    padding: 0 1.15rem 1.05rem;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero {
    padding: 2.4rem 2.6rem 2.5rem;
  }

  .page-faq .faq-step {
    padding: 2.2rem 2.6rem 2.4rem;
  }

  .page-faq .faq-step::before {
    left: 2.6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__toc a,
  .page-faq .faq-back {
    transition: none;
  }
}
<<<END>>>